This Kase K9 100mm Entry-Level Filter Holder Kit contains a Kase K9 100mm Filter Holder, a Kase 100 x 100mm Wolverine Solid Neutral Density 1.8 Filter, a Kase 100 x 150mm Wolverine Soft-Edge Graduated ND 0.9 Filter, as well as a Kase 90mm Magnetic Circular Polarizer Filter that is designed to avoid vignetting when used with a wide-angle lens. The neutral density filters can be used individually or in combination to improve the results of your photography by preventing overexposure, along with the circular polarizer, which serves to prevent distracting reflections or glare.

Utilizing a modular filter slot system, the filter holder allows for the convenient use of up to three, 100mm wide, 2mm thick filters such as the included Kase Wolverine neutral density filters, along with the included circular polarizer. The slot system can also be reconfigured so that the kit's filter holder accommodates up to three, separately-available 100mm wide, 1.1mm thick filters along with the circular polarizer filter. While in use, the circular polarizer filter magnetically fits within the filter holder system so that it can be quickly installed, removed, or switched with a different Kase 90mm magnetic filter depending on the subject or changing lighting conditions.

Constructed for durability while remaining lightweight, use of the K9 100mm Entry Level Filter Holder Kit is easily accomplished by first screwing one of its included 77 or 82mm adapter rings onto a lens or step-up ring with corresponding front filter threads. A 67-82mm step-up ring as well as a 72-82mm step-up ring for use with the 82mm adapter ring are also included for lenses with 67mm or 72mm front filter threads, respectively. After being fitted onto an adapter ring, the filter holder's locking knob helps to provide a reliable, yet adjustable connection that allows the holder to be rotated 360°, which benefits the use of graduated neutral density or other filters that are enhanced by varied positioning. The included circular polarizer filter can then be placed within the filter holder assembly, followed by 100mm wide filters that are either 2mm or 1.1mm thick.